`The SMM members took cover in the trenches at the `LPR´ checkpoint and remained there for approximately 90 minutes. During this time, there was continuous incoming mortar shelling (30-40 rounds) and automatic grenade launcher fire that impacted near the SMM´s position (50-100m). The SMM observed at least one mortar round strike within 40m of a bus carrying civilians from Obozne („LPR“-controlled, 18km north of Lugansk) towards Lugansk city,´ the OSCE went on to say.